rwalterhoeppner
FollowFresnel Lens
Park hosting in Oregon's Cape Blanco State Park, I had the privilege of leading tours in the lighthouse there. The Cape Blanco lighthouse houses this magn...
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Park hosting in Oregon's Cape Blanco State Park, I had the privilege of leading tours in the lighthouse there. The Cape Blanco lighthouse houses this magnificent Fresnel lens, and the prism's that focus its light over twenty miles away.
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